摘要
提出一种新的硬质合金/铸钢复合材料的制备方法,电磁感应熔渗法。利用电磁感应加热的特点,成功制备了以铸钢为基材,以硬质合金作为增强相的耐磨复合材料。对复合材料的显微组织及物相进行了分析,测试了复合材料的硬度,并与ZG45进行了三体磨料磨损性能对比实验。结果表明,所得复合材料铸造质量良好,硬质合金与钢基体间存在明显过渡区域,形成良好的冶金结合;复合材料硬度由硬质合金心部到钢基体过渡均匀;相对于ZG45标样,复合材料的三体耐磨性能提高了0.75倍。
In order to discuss the preparation technology of cemented carbide / cast steel composite, a new method of electromagnetie induction melting infiltration was put forward. According to the particularity of electromagnetic induction heating, the steel matrix composite reinforced by cemented carbide was successfully gained. The mierostrueture and component of the composite was analyzed. The hardness of composite was ineasured and the three-body abrasive wear test was performed on the ZG45 and the composite. The experimental results indieat that the casting quality of the composite is very good, and there is obvious transition zone between the steel matrix and the cemented carbide, which belongs to excellent metallurgical connection. The hardness changes are even from the cemented carbide to the steel matrix. The three-body abrasive wear performance of the composite increases obviously, which is 1.75 times as great as the ZG45.
出处
《热加工工艺》
CSCD
北大核心
2008年第19期38-41,共4页
Hot Working Technology
关键词
复合铸造
电磁感应
硬质合金
冶金结合
composite casting
electromagnetic induction
cemented carbide
metallurgical connection
